How to convert this code from algorithm2e to algorithmicx

Finally after going through several articles online, I could make a basic transformation(Although the effect is not like the previous version). Sharing my experience, in case if helps anyone.

1. First of all, the journal class itself includes the necessary algorithmic packages, so there is no need to have any of

\usepackage{algorithm} \usepackage{algpseudocode} \usepackage{algorithmicx}

2. Next I had to make the following changes [ After realizing every statement must be preceded with \State and there is no {} bracket required to group the statements under IF or WHILE ] So my MWC becomes

    \documentclass[pdflatex, sn-aps]{sn-jnl}% American Physical Society (APS) Reference Style
    %%%% Standard Packages
    \usepackage[utf8]{inputenc}
    \usepackage[english]{babel}
    \usepackage{comment}
    \usepackage{float}
    \usepackage[misc]{ifsym}
    \usepackage{csquotes}
    \usepackage[section]{placeins}
    \usepackage{siunitx}
    \usepackage{amsmath}
    \usepackage{graphicx}
   
    \begin{document}
   
    %Algorithm-1 code*****************
    \begin{algorithm}
    \caption{Check for the fall event~(runs on the RPi server)}\label{alg:algo1}
    \begin{algorithmic}[1]
    \State $function fall\_check()$
    \State INPUT: The accelerometer data and timestamp
    \State $OUTPUT: response ( TRUE/FALSE)$
   
    \State read\_data$()$\;
    \State Calculate the SVM using the equation \ref{SVM}.
    \If{ $SVM_\mathrm{acc}>SVM_\mathrm{acc}(threshold)$ \& $time\_count< 2 seconds $}
   
        \If {$record\_count > 150$}
   
            \State return$(TRUE)$\;
   
        \Else
            \State return$(FALSE)$\;
   
   
         \EndIf
   
     \EndIf
   
    \end{algorithmic}
    \end{algorithm}
    \end{document} 
   

Not answering how to convert, but I had the same problem, and this thread was the first in search results. So I almost started converting my algorithms already.

Fortunately, the springer journal class only suggests using algorithm and algorithmicx, but it still supports algorithm2e. One can just follow the advice from this answer to avoid compile errors while using algorithm2e with sn-jnl class.